Owl calling whistle



FIG. 1 is a reduced perspective view of an owl calling whistle embodying my new design.

FIG. 2 is a top plan view thereof.

FIG. 3 is a bottom plan view thereof.

FIG. 4 is a front elevation view thereof.

FIG. 5 is a side elevation view thereof, the opposite side being a mirror image.

FIG. 6 is a rear elevation view thereof. 

The ornamental design for an owl calling whistle, substantially as shown and described. 